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                    <h2><a name="t0"></a><a id="_0"></a>定义</h2> 
<ul><li>Java中，可以使用访问修饰符来保护对类、变量、方法和构造方法的访问。Java 支持 4 种不同的访问权限。</li></ul> 
<h2><a name="t1"></a><a id="_4"></a>分类</h2> 
<ul><li>private : 在同一类内可见。使用对象：变量、方法。 注意：不能修饰类（外部类）</li><li>default (即缺省，什么也不写，不使用任何关键字）: 在同一包内可见，不使用任何修饰符。使用对象：类、接口、变量、方法。</li><li>protected : 对同一包内的类和所有子类可见。使用对象：变量、方法。 注意：不能修饰类（外部类）。</li><li>public : 对所有类可见。使用对象：类、接口、变量、方法</li></ul> 
<h2><a name="t2"></a><a id="_11"></a>访问修饰符图</h2> 
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				<div class="desc ellipsis-online ellipsis-online-1">成员变量有四种<em>修饰符</em>&nbsp;
pri<em>va</em>te 私有的&nbsp;
package/friendly/default 不写&nbsp;
protected 受保护的&nbsp;
public 公共的&nbsp;

比如public 表示公共的


public String name;

而maxHP 没有<em>修饰符</em>即代表package/friendly/default


float maxHP

示例 1 : 类之间的关系

类和类之间的关系有...</div>
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				<div class="desc ellipsis-online ellipsis-online-1"><em>分类</em>：四种，更安全。





【1】 public     本类  本包中的子类  本包中的其它类  其它包中的子类  其它包中的其它类

【2】 protected  本类  本包中的子类  本包中的其它类  其它包中的子类  不能

【3】 default    本类  本包中的子类  本包中的其它类  不能          ...</div>
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</div><div class="recommend-item-box baiduSearch clearfix" data-type="blog" data-report-view="{&quot;mod&quot;:&quot;popu_387&quot;,&quot;extra&quot;:&quot;{\&quot;utm_medium\&quot;:\&quot;distribute.pc_relevant.none-task-blog-2~default~baidujs_baidulandingword~default-4.pc_relevant_aa\&quot;,\&quot;dist_request_id\&quot;:\&quot;1643168036801_38818\&quot;,\&quot;parent_index\&quot;:\&quot;3\&quot;}&quot;,&quot;spm&quot;:&quot;1001.2101.3001.4242.3&quot;,&quot;dest&quot;:&quot;https://blog.csdn.net/qq_36436290/article/details/100580927&quot;,&quot;strategy&quot;:&quot;2~default~baidujs_baidulandingword~default&quot;,&quot;ab&quot;:&quot;new&quot;,&quot;index&quot;:&quot;4&quot;}">	                <div class="content-box">		                <div class="content-blog display-flex">			                  <div class="title-box">				                  <a class="tit" href="https://blog.csdn.net/qq_36436290/article/details/100580927" target="_blank" data-report-click="{&quot;mod&quot;:&quot;popu_387&quot;,&quot;extra&quot;:&quot;{\&quot;utm_medium\&quot;:\&quot;distribute.pc_relevant.none-task-blog-2~default~baidujs_baidulandingword~default-4.pc_relevant_aa\&quot;,\&quot;dist_request_id\&quot;:\&quot;1643168036801_38818\&quot;,\&quot;parent_index\&quot;:\&quot;3\&quot;}&quot;,&quot;spm&quot;:&quot;1001.2101.3001.4242.3&quot;,&quot;dest&quot;:&quot;https://blog.csdn.net/qq_36436290/article/details/100580927&quot;,&quot;strategy&quot;:&quot;2~default~baidujs_baidulandingword~default&quot;,&quot;ab&quot;:&quot;new&quot;,&quot;index&quot;:&quot;4&quot;}" data-report-query="utm_medium=distribute.pc_relevant.none-task-blog-2~default~baidujs_baidulandingword~default-4.pc_relevant_aa&amp;spm=1001.2101.3001.4242.3&amp;utm_relevant_index=7">					                <div class="left ellipsis-online ellipsis-online-1">四种<em>访问修饰符</em>_笑倾尘的博客</div>				                  </a>			                  </div>                    <div class="info-box display-flex">                      <div class="info display-flex">                        <span class="info-block">1-12</span>                      </div>                    </div>                  </div>                  <div class="desc-box">                    <a href="https://blog.csdn.net/qq_36436290/article/details/100580927" target="_blank" data-report-click="{&quot;mod&quot;:&quot;popu_387&quot;,&quot;extra&quot;:&quot;{\&quot;utm_medium\&quot;:\&quot;distribute.pc_relevant.none-task-blog-2~default~baidujs_baidulandingword~default-4.pc_relevant_aa\&quot;,\&quot;dist_request_id\&quot;:\&quot;1643168036801_38818\&quot;,\&quot;parent_index\&quot;:\&quot;3\&quot;}&quot;,&quot;spm&quot;:&quot;1001.2101.3001.4242.3&quot;,&quot;dest&quot;:&quot;https://blog.csdn.net/qq_36436290/article/details/100580927&quot;,&quot;strategy&quot;:&quot;2~default~baidujs_baidulandingword~default&quot;,&quot;ab&quot;:&quot;new&quot;,&quot;index&quot;:&quot;4&quot;}" data-report-query="utm_medium=distribute.pc_relevant.none-task-blog-2~default~baidujs_baidulandingword~default-4.pc_relevant_aa&amp;spm=1001.2101.3001.4242.3&amp;utm_relevant_index=7">                      <div class="desc ellipsis-online ellipsis-online-1">四种<em>访问修饰符</em> 适用范围&lt;<em>访问</em>权限范围越小,安全性越高&gt; <em>访问</em>权限 类 包 子类 其他包 public ∨ ∨ ∨ ∨ (对任何人都是可用的) protect ∨ ∨ ∨ × (继承的类可以<em>访问</em>以及和pri<em>va</em>te一样的权限) default ∨ ∨ × × (包...</div>                    </a>                  </div>                </div>              </div><div class="recommend-item-box baiduSearch clearfix" data-type="blog" data-report-view="{&quot;mod&quot;:&quot;popu_387&quot;,&quot;extra&quot;:&quot;{\&quot;utm_medium\&quot;:\&quot;distribute.pc_relevant.none-task-blog-2~default~baidujs_baidulandingword~default-5.pc_relevant_aa\&quot;,\&quot;dist_request_id\&quot;:\&quot;1643168036801_38818\&quot;,\&quot;parent_index\&quot;:\&quot;3\&quot;}&quot;,&quot;spm&quot;:&quot;1001.2101.3001.4242.4&quot;,&quot;dest&quot;:&quot;https://blog.csdn.net/xkfanhua/article/details/80557495&quot;,&quot;strategy&quot;:&quot;2~default~baidujs_baidulandingword~default&quot;,&quot;ab&quot;:&quot;new&quot;,&quot;index&quot;:&quot;5&quot;}">	                <div class="content-box">		                <div class="content-blog display-flex">			                  <div class="title-box">				                  <a class="tit" href="https://blog.csdn.net/xkfanhua/article/details/80557495" target="_blank" data-report-click="{&quot;mod&quot;:&quot;popu_387&quot;,&quot;extra&quot;:&quot;{\&quot;utm_medium\&quot;:\&quot;distribute.pc_relevant.none-task-blog-2~default~baidujs_baidulandingword~default-5.pc_relevant_aa\&quot;,\&quot;dist_request_id\&quot;:\&quot;1643168036801_38818\&quot;,\&quot;parent_index\&quot;:\&quot;3\&quot;}&quot;,&quot;spm&quot;:&quot;1001.2101.3001.4242.4&quot;,&quot;dest&quot;:&quot;https://blog.csdn.net/xkfanhua/article/details/80557495&quot;,&quot;strategy&quot;:&quot;2~default~baidujs_baidulandingword~default&quot;,&quot;ab&quot;:&quot;new&quot;,&quot;index&quot;:&quot;5&quot;}" data-report-query="utm_medium=distribute.pc_relevant.none-task-blog-2~default~baidujs_baidulandingword~default-5.pc_relevant_aa&amp;spm=1001.2101.3001.4242.4&amp;utm_relevant_index=8">					                <div class="left ellipsis-online ellipsis-online-1"><em>Java</em><em>访问修饰符</em>(<em>访问</em>控制符)_xkfanhua的博客</div>				                  </a>			                  </div>                    <div class="info-box display-flex">                      <div class="info display-flex">                        <span class="info-block">1-11</span>                      </div>                    </div>                  </div>                  <div class="desc-box">                    <a href="https://blog.csdn.net/xkfanhua/article/details/80557495" target="_blank" data-report-click="{&quot;mod&quot;:&quot;popu_387&quot;,&quot;extra&quot;:&quot;{\&quot;utm_medium\&quot;:\&quot;distribute.pc_relevant.none-task-blog-2~default~baidujs_baidulandingword~default-5.pc_relevant_aa\&quot;,\&quot;dist_request_id\&quot;:\&quot;1643168036801_38818\&quot;,\&quot;parent_index\&quot;:\&quot;3\&quot;}&quot;,&quot;spm&quot;:&quot;1001.2101.3001.4242.4&quot;,&quot;dest&quot;:&quot;https://blog.csdn.net/xkfanhua/article/details/80557495&quot;,&quot;strategy&quot;:&quot;2~default~baidujs_baidulandingword~default&quot;,&quot;ab&quot;:&quot;new&quot;,&quot;index&quot;:&quot;5&quot;}" data-report-query="utm_medium=distribute.pc_relevant.none-task-blog-2~default~baidujs_baidulandingword~default-5.pc_relevant_aa&amp;spm=1001.2101.3001.4242.4&amp;utm_relevant_index=8">                      <div class="desc ellipsis-online ellipsis-online-1"><em>Java</em>的<em>修饰符</em>有很多,分为<em>访问修饰符</em>和非<em>访问修饰符</em>。 <em>访问修饰符</em>也叫<em>访问</em>控制符,是指能够控制类、成员变量、方法的使用权限的关键字。 在面向对象编程(OOP)中,<em>访问</em>控制符是一个很重要的概念,可以使用它来保护对类、变量、方法以及构造...</div>                    </a>                  </div>                </div>              </div>
		
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					<div class="left ellipsis-online ellipsis-online-1">19、<em>访问修饰符</em></div>
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					<span class="info-block time">09-17</span>
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				<div class="desc ellipsis-online ellipsis-online-1">学习目标：

1、了解<em>Java</em>的<em>修饰符</em>的意义

2、了解不同<em>修饰符</em>的区别

3、能根据业务需要灵活的使用不同<em>修饰符</em>

学习过程：

一、<em>访问修饰符</em>的介绍

信息隐藏是 OOP 最重要的功能之一，也是使用<em>访问修饰符</em>的原因。信息隐藏的原因包括：（1）对任何实现细节所作的更改不会影响使用该类的代码，（2）防止用户意外删除数据。<em>访问修饰符</em>使用的关键字有三个:pri<em>va</em>te（私有） ,protected（保...</div>
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					<div class="left ellipsis-online ellipsis-online-1"><em>Java</em>中的四种<em>访问修饰符</em>（附代码测试）</div>
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					<span class="info-block time">11-10</span>
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				<div class="desc ellipsis-online ellipsis-online-1">在写<em>Java</em>代码的时候，总会使用到<em>访问修饰符</em>，那么，四种<em>访问修饰符</em>之间有什么区别？又是什么时候去使用相对应的<em>修饰符</em>呢？今天就了解一下这四个<em>修饰符</em>的不同吧。
<em>Java</em>四个<em>修饰符</em>:public、protected、default、pri<em>va</em>te。按照顺序，<em>修饰符</em>能作用的范围依次减小。用一个表格来表示就是：
 为了验证表格的正确与否以及更好地理解，下面我们用代码来测试一下。
首先我们来验证四种<em>修饰符</em>能否...</div>
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					<div class="left ellipsis-online ellipsis-online-1">四种<em>访问修饰符</em>详解（推荐）</div>
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				<div class="desc ellipsis-online ellipsis-online-1">四个<em>访问修饰符</em>（是添加到类、结构或成员声明的关键字）
Public：公有的，是类型和类型成员的<em>访问修饰符</em>。对其<em>访问</em>没有限制。
Internal：内部的，是类型和类型成员的<em>访问修饰符</em>。同一个程序集中的所有类都可以<em>访问</em>
Pri<em>va</em>te：私有的，是一个成员<em>访问修饰符</em>。只有在声明它们的类和结构中才可以<em>访问</em>。
Protected：受保护的，是一个成员<em>访问修饰符</em>。只能在它的类和它的派生类中<em>访问</em>。
注意点：
一个成员或类型只能有一个<em>访问修饰符</em>，使用 protected internal组合时除外。
如果在成员声明中未指定</div>
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				<div class="desc ellipsis-online ellipsis-online-1">转自：https://www.cnblogs.com/tjudzj/p/4443066.html
对<em>Java</em>中的<em>修饰符</em>一直记不住，现在结合网上的一些资料进行总结，并重点说明一下protected<em>修饰符</em>。
一. <em>Java</em>中的<em>访问修饰符</em>
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					<div class="left ellipsis-online ellipsis-online-1"><em>java</em>中成员变量的声明及其<em>修饰符</em></div>
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				<div class="desc ellipsis-online ellipsis-online-1">一个类的成员变量的声明必须出现在类体中，而不是在方法体中（方法体中声明的是局部变量）。
声明一个成员变量的一般形式：
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
【可<em>访问</em>性<em>修饰符</em>】【static】【final】类型 变量名
&nbsp;【可<em>访问</em>性<em>修饰符</em>】：说明该变量的可<em>访问</em>属性，即定义该该变量可以被<em>访问</em>的范围。
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</div>
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					<div class="left ellipsis-online ellipsis-online-1">四种<em>访问修饰符</em></div>
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				<div class="desc ellipsis-online ellipsis-online-1">首先先说一下四种<em>访问修饰符</em>都是谁：①pri<em>va</em>te；②protected；③public；④package/friendly/default 。

现在详细说一下四种<em>访问修饰符</em>的<em>访问</em>权限：

1）pri<em>va</em>te

私有的，只有自身可以<em>访问</em>，同包子类、不同包子类都不可继承，同包类、其他类均不可<em>访问</em>。

2）package

自身和同包类都可以<em>访问</em>，其他类不可以<em>访问</em>；同包子类可以继承，不同包子类...</div>
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					<div class="left ellipsis-online ellipsis-online-1"><em>java</em>中有哪些<em>访问修饰符</em>_<em>java</em>中四种<em>访问修饰符</em></div>
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				<div class="desc ellipsis-online ellipsis-online-1"><em>Java</em>中的四种<em>访问修饰符</em>：public、protected、default(无<em>修饰符</em>，默认)、pri<em>va</em>te。四种<em>修饰符</em>可<em>修饰</em>的成分(类、方法、成员变量)publicprotecteddefaultpri<em>va</em>te类√×√×(内部类可以用pri<em>va</em>te<em>修饰</em>)方法√√√√成员变量√√√√四种<em>修饰符</em>的<em>访问</em>权限public:对所有类可见protected:对同一包中的类可见、对同一包及不同包中的子类可见...</div>
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					<div class="left ellipsis-online ellipsis-online-1"><em>Java</em> 中4种<em>访问修饰符</em></div>
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				<div class="desc ellipsis-online ellipsis-online-1">1、含义

1）对于public<em>修饰符</em>，它具有最大的<em>访问</em>权限，可以<em>访问</em>任何一个在CLASSPATH下的类、接口、异常等。它往往用于对外的情况，也就是对象或类对外的一种接口的形式。

（2）对于protected<em>修饰符</em>，它主要的作用就是用来保护子类的。它的含义在于子类可以用它<em>修饰</em>的成员，其他的不可以，它相当于传递给子类的一种继承的东西。

（3）对于default来说，有点的时候也成为friendly（友员），它是针对本包<em>访问</em>而设计的，任何处于本包下的类、接口、异常等，都可以相互<em>访问</em>，即使是父类没有用prot</div>
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				<div class="desc ellipsis-online ellipsis-online-1"><em>修饰符</em>类成员方法构造方法成员变量局部变量abstract(抽象的)√√－－－static (静态的)－√－√－public(公共的)√√√√－protected(受保护的)√√√－pri<em>va</em>te(私有的)－√√√－synchronized(同步的)－√－－－native(本地的)－√－－－transient(暂时的)－－－√－volatie(易失的)－－－√－final(不要改变的)√√－√√类...</div>
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				<div class="desc ellipsis-online ellipsis-online-1">四种<em>访问修饰符</em>以及各自的权限
1.可<em>访问</em>控制符有 4 种：公共<em>访问</em>控制符： public ；私有<em>访问</em>控制符： pri<em>va</em>te ；保护<em>访问</em>控制符： protected ；私有保护<em>访问</em>控制符： pri<em>va</em>te protected
2.非<em>访问</em>控制符有 4 种：静态域<em>修饰符</em>： static ；最终域<em>修饰符</em>： final ；易失 ( 共享 ) 域<em>修饰符</em>： volatile ；暂时性域<em>修饰符</em>： transient
3.

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				<div class="desc ellipsis-online ellipsis-online-1">什么是<em>访问修饰符</em>
(1)<em>访问修饰符</em>就是用来设置控制封装的这个目标的权限范围
(2)权限范围：这个目标可以被哪些对象在什么地方可以<em>访问</em>到这个目标的数据
1.public(公有,<em>访问</em>权限最大)
(1).public<em>访问修饰符</em>允许一个类将其成员变量和成员函数暴露给其他的函数和对象。任何公有成员可以被外部的类<em>访问</em>。所有类或成员，任何代码均可<em>访问</em>该项
(2).<em>访问</em>权限最大
(3).意味着最不安全
(4).范...</div>
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				<div class="desc ellipsis-online ellipsis-online-1"><em>访问</em>等级比较：public &gt; protected &gt; default &gt; pri<em>va</em>te
1、public
(1) public是公共的，被public<em>修饰</em>的成员可以被所有类<em>访问</em>到。
(2) public<em>修饰</em>的成分
public<em>修饰</em>类，在一个<em>java</em>文件中只能有一个类被声明为public，而且一旦有一个类为public，这个<em>java</em>文件的文件名就必须要和这个被public所<em>修饰</em>的类的类名相同，否则不能通过编译。一个类作为外部类只能被public或者默认<em>访问修饰符</em><em>修饰</em>，如果作为内部类则可以</div>
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					<div class="left ellipsis-online ellipsis-online-1">关于<em>访问修饰符</em>——区别与联系</div>
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				<div class="desc ellipsis-online ellipsis-online-1">继承

最近想总结下知识点，就从小的开始吧。



关于类的<em>访问修饰符</em>

类前面的<em>修饰符</em>有两种情况，一个是public，还有一个是默认<em>修饰符</em>(即不带任何<em>修饰符</em>)


public:公开

一个项目的所有包都可以<em>访问</em>到这个类；
默认<em>修饰符</em>：

只有当前包可以<em>访问</em>到这个类；


如图所示，存在如下包结构： 
 
我们将Child类<em>访问修饰符</em>设为默认，Parent设为public： 
 
 
我们尝试从...</div>
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					<div class="left ellipsis-online ellipsis-online-1">四种<em>访问</em>权限<em>修饰符</em></div>
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				<div class="desc ellipsis-online ellipsis-online-1">对于类的成员（属性和方法）而言，4 种<em>访问</em>权限<em>修饰符</em>都可以使用。下面按照权限从小到大的顺序（即 pri<em>va</em>te &lt; default &lt; protected &lt; public）对四种<em>访问</em>权限<em>修饰符</em>分别进行介绍。
私有权限 pri<em>va</em>te
pri<em>va</em>te 可以<em>修饰</em>属性、构造方法、普通方法。被 pri<em>va</em>te <em>修饰</em>的类成员只能在定义它们的类中使用，在其他类中都不能<em>访问</em>。
在第 6 章介绍封装的时候，已经使用了 pri<em>va</em>te 这个<em>访问</em>权限<em>修饰符</em>。对于封装良好的程序而言，一般将属性私有化，提供公有</div>
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				<div class="desc ellipsis-online ellipsis-online-1">详解<em>java</em><em>访问修饰符</em>为了防止初学者看到因为专业的术语而感觉晦涩难懂，我接下来尽量用生动比喻的说法来解释！首先第一点，我们来讲讲什么叫<em>修饰符</em>！看看这个名称，想想他的意思。<em>修饰符</em>！<em>修饰符</em>！，就是用来<em>修饰</em>的一种符号！就好比说：一个美丽的女孩。这里美丽的是用来<em>修饰</em>女孩的，来说明这个女孩的特点！一把锋利的小刀，锋利的是来说明刀的特点的。所以<em>java</em>中的<em>修饰符</em>和上面是同一个道理，是用来说明<em>java</em>中的类，方...</div>
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                <a class="title text-truncate" target="_blank" href="https://thinkwon.blog.csdn.net/article/details/103522351#comments_19893421" data-report-click="{&quot;mod&quot;:&quot;popu_542&quot;,&quot;spm&quot;:&quot;1001.2101.3001.4231&quot;,&quot;dest&quot;:&quot;https://thinkwon.blog.csdn.net/article/details/103522351#comments_19893421&quot;,&quot;ab&quot;:&quot;new&quot;}" data-report-view="{&quot;mod&quot;:&quot;popu_542&quot;,&quot;spm&quot;:&quot;1001.2101.3001.4231&quot;,&quot;dest&quot;:&quot;https://thinkwon.blog.csdn.net/article/details/103522351#comments_19893421&quot;,&quot;ab&quot;:&quot;new&quot;}">Redis面试题（2020最新版）</a>
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                    <a href="https://blog.csdn.net/weixin_42498932" class="user-name" target="_blank">灵灵｀柒: </a>
                    <span class="code-comments">appendfsync选项的值为always时，持久性是没办法保证的，因为Redis是在下一次事件循环中才执行刷盘策略，在此之前数据只是存在于AOF缓冲区中，是有可能丢失的。</span>
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                <a class="title text-truncate" target="_blank" href="https://thinkwon.blog.csdn.net/article/details/120928777#comments_19885818" data-report-click="{&quot;mod&quot;:&quot;popu_542&quot;,&quot;spm&quot;:&quot;1001.2101.3001.4231&quot;,&quot;dest&quot;:&quot;https://thinkwon.blog.csdn.net/article/details/120928777#comments_19885818&quot;,&quot;ab&quot;:&quot;new&quot;}" data-report-view="{&quot;mod&quot;:&quot;popu_542&quot;,&quot;spm&quot;:&quot;1001.2101.3001.4231&quot;,&quot;dest&quot;:&quot;https://thinkwon.blog.csdn.net/article/details/120928777#comments_19885818&quot;,&quot;ab&quot;:&quot;new&quot;}">Java面试总结（2021优化版）发布&amp;1024程序员节</a>
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                    <a href="https://blog.csdn.net/qq_43479892" class="user-name" target="_blank">qq_43479892: </a>
                    <span class="code-comments">ThinkWon,Java面试总结（2021优化版）发布&amp;1024程序员节,,同为博客爱好者，欢迎博主回访本人专栏！</span>
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                    <a href="https://blog.csdn.net/zhucezhennanaa" class="user-name" target="_blank">zhucezhennanaa: </a>
                    <span class="code-comments">这些springboot和springcloud面试题，太浅了；前面的基础题都挺好，到springboot和cloud模块，太浅了</span>
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                <a class="title text-truncate" target="_blank" href="https://thinkwon.blog.csdn.net/article/details/104588551#comments_19879019" data-report-click="{&quot;mod&quot;:&quot;popu_542&quot;,&quot;spm&quot;:&quot;1001.2101.3001.4231&quot;,&quot;dest&quot;:&quot;https://thinkwon.blog.csdn.net/article/details/104588551#comments_19879019&quot;,&quot;ab&quot;:&quot;new&quot;}" data-report-view="{&quot;mod&quot;:&quot;popu_542&quot;,&quot;spm&quot;:&quot;1001.2101.3001.4231&quot;,&quot;dest&quot;:&quot;https://thinkwon.blog.csdn.net/article/details/104588551#comments_19879019&quot;,&quot;ab&quot;:&quot;new&quot;}">Java集合容器面试题（2020最新版）</a>
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                    <a href="https://blog.csdn.net/qq_40368652" class="user-name" target="_blank">WITHER_HL: </a>
                    <span class="code-comments">我也看到了，我去。linkedList 竟然写 数组实现。。。。。。</span>
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                    <a href="https://blog.csdn.net/jiyukun1" class="user-name" target="_blank">心寒语录: </a>
                    <span class="code-comments">hashmap链表转换成红黑树条件不对，数组长度超过64，这个是前提。然后链表长度超过8转换成红黑树。</span>
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